CAJ | 학술논문

覆盖率是衡量无线传感器网络服务质量的重要指标。为提高网络覆盖率，针对水下三维传感器网络模型，提出一种基于定向移动的虚拟力算法。将虚拟力简化为节点只受邻居节点的斥力作用，定义当2个邻居节点的感知圆球相切时，其位置为相对理想位置。节点所受虚拟力大小与节点移动到相对该邻居的理想位置所需移动的距离成正比，而节点移动的距离与节点所受到的虚拟力的合力相关。实验结果表明，该算法能有效地对水下传感器网络的布局进行优化，提高网络覆盖率。
복개솔시형량무선전감기망락복무질량적중요지표。위제고망락복개솔，침대수하삼유전감기망락모형，제출일충기우정향이동적허의력산법。장허의력간화위절점지수린거절점적척력작용，정의당2개린거절점적감지원구상절시，기위치위상대이상위치。절점소수허의력대소여절점이동도상대해린거적이상위치소수이동적거리성정비，이절점이동적거리여절점소수도적허의력적합력상관。실험결과표명，해산법능유효지대수하전감기망락적포국진행우화，제고망락복개솔。
The coverage is a fundamental issue and an important indicator of the service quality in Wireless Sensor Network ( WSN ) . For three-dimensional underwater sensor network model, an virtual force algorithm based on directional movement is proposed that simplifies virtual force as the repulsion force only by neighboring nodes. This paper defines the ideal position relatively of the two nodes’ position while one of sensing spheres of two neighboring nodes is tangent to the other. Virtual force is proportional to the distance moved from original position to the ideal position. The movement distance is determined by the resultant of virtual force which acts on the node. Experimental results show that the algorithm can effectively optimize the layout of underwater sensor networks and improve the network’ s coverage rate.